DOI: 10.1016/j.quascirev.2017.03.013
论文题名: Influence of the Indian monsoon and the subtropical jet on climate change on the Tibetan Plateau since the late Pleistocene
作者: Hou J. ; D'Andrea W.J. ; Wang M. ; He Y. ; Liang J.
刊名: Quaternary Science Reviews
出版年: 2017
卷: 163 起始页码: 84
结束页码: 94
语种: 英语
英文关键词: Holocene
; Hydrogen isotopes
; Monsoon
; Sedimentary leaf waxes
; Tibetan Plateau
; Westerlies
Scopus关键词: Atmospheric temperature
; Atmospheric thermodynamics
; Budget control
; Climate change
; Cobalt compounds
; Isotopes
; Lakes
; Moisture
; Oceanography
; Sedimentology
; Surface waters
; Holocenes
; Hydrogen isotope
; Monsoon
; Tibetan Plateau
; Westerlies
; Fighter aircraft
; climate variation
; Holocene
; hydrogen isotope
; monsoon
; paleoclimate
; Pleistocene
; sea surface temperature
; wax
; westerly
; Atlantic Ocean
; Atlantic Ocean (North)
; Bangong Lake
; China
; Qinghai
; Qinghai Lake
; Qinghai-Xizang Plateau
英文摘要: Precipitation atop the Tibetan Plateau (TP) is delivered by the Indian summer monsoon, the Asian summer monsoon, and weather systems associated with the subtropical westerly jet. Variations in the relative importance of the monsoon systems and the westerly jet are hypothesized to have occurred at decadal, millennial and glacial-interglacial scales. However, paleoclimate observations based on explicit climate proxies are still scarce, limiting our understanding of the mechanisms of Holocene climate variability on the Tibetan Plateau (TP). Here we present three independently dated compound specific hydrogen isotope records of sedimentary leaf waxes from lakes on the TP, Bangong Co, Lake Qinghai and Linggo Co. The leaf wax δD records reflect isotopes in precipitation, and we combine these observations with existing isotopic and hydrological data to investigate variations in the influence of the summer monsoon and the westerly jet on the moisture budget of the TP since the Late Pleistocene. δD values of precipitation at all three lakes were relatively positive during the Late Pleistocene indicating a weakened summer monsoon. During the early and mid-Holocene, δD values of precipitation at the three lakes were relatively negative, suggesting the importance of summer monsoon. During the middle to late Holocene, δD values at Bangong Co and Lake Qinghai gradually increased with superimposed episodes of short term of δD variability. However, at Linggo Co in the northern TP, periods of more positive δD values of precipitation correspond to wetter intervals inferred from lake level high stands, and likely reflect variations in moisture associated with the westerly jet. Thus, the δD records at Linggo Co imply the lesser importance of summer monsoon moisture in the hydrologic budget of the northern TP. Collectively, the hydrogen isotope records at these three lakes document millennial and centennial scale variations in the strength of the summer monsoon systems and concurrent changes in the westerly jet. Furthermore, millennial-scale fluctuations in the δD records at the three lakes during the middle to late Holocene suggest episodes of reduced summer monsoonal moisture delivery to these regions, and correspond with intervals of cool sea surface temperatures in the North Atlantic. © 2017 Elsevier Ltd 资助项目: Hou, J.
; Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of SciencesChina
; 电子邮件: houjz@itpcas.ac.cn
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59252
Appears in Collections: 过去全球变化的重建
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作者单位: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China; Lamont Doherty Earth Observatory, Columbia University, Palisades, NY, United States; Faculty of Earth Sciences, China University of Geosciences, Wuhan, China; Hebei Geo University, Shiijiazhuang, China; University of Chinese Academy of Science, Beijing, China
Recommended Citation:
Hou J.,D'Andrea W.J.,Wang M.,et al. Influence of the Indian monsoon and the subtropical jet on climate change on the Tibetan Plateau since the late Pleistocene[J]. Quaternary Science Reviews,2017-01-01,163